Experimental requirements:
two computers connected to different network segments (also can be a computer, you need to configure three network cards,)
server2 and server1 has two network cards are
server1: 1--192.168.4.4 card, network card 2--192.168.2.12
server2: 1--192.168.3.5 card, network card 2--192.168.2.254
pc1: ip - 192.168.4.6, the gateway --192.168.4.4
PC2: ip - 192.168.3.6, the gateway --192.168.3.5
Static routing configuration: go to the target network segment, gateway to write the interface ip address
References: http://www.luyouqiwang.com/14376/
A computer connected to three different network segments, you need four NIC
card a, ip: 192.168.0.1, not the gateway 
card two, ip: 192.168.1.9, not the gateway 
card three, ip: 192.168.2.9, not the gateway, 
network card four, ip: 192.168.3.9, not the gateway 
pc1, ip: 192.168.1.10, gateway 192.168.1.9 ------------- pc2, ip: 192.168.2.10, gateway, 192.168.2.9-- -------- pc3, ip: 192.168.3.10 gateway, 192.168.3.9
nat mapping can also be connected to different segments of
methods:
two network cards on the server: a public network connection, a network connection ---- install "Network Policy and Access Services" 
right-click --- Configure and Enable Routing and Remote Access 
Here select a connection to the public network ip
====dns配置===
dns申请： http://jingyan.baidu.com/album/e5c39bf5601ea839d76033ec.html?picindex=1
dns案例：http://baike.baidu.com/view/443551.htm?fr=aladdin
创建DNS服务的服务器必须能ping通DNS地址
dns转发器上的区域一定是dns自身没有的区域，如dns1--ip ：192.168.1.2 dns2-ip：192.168.1.3，若在dns上设置转发器为 192.168.1.3，比如转发的是 www.kungfu365.net
那么在dns1 上就不应该有此查找域：kungfu365.net，即便是此区域内没有A记录，否则，将不能正常转发。
虚拟机hyper-v如果安装两快网卡，一块内部网络10.0.0.1，一块外部网络192.168.8.73，那么这台计算机既能ping通10.0.0.0网段又能ping通192.168.0.0网段
f
配置路由和nat http://www.doc88.com/p-474112764200.html
======================***的配置===============
客户端访问---客户端的电脑IP要跟***服务器公网IP 在一个网段，客户端网卡：10.0.0.0
公司 LAN：192.168.1.0
***服务器：LAN网卡，192.168.1.0，WAN网卡：10.0.0.0
Routing and Remote Access installed on the server 
to select the external network adapter: 10.0.0.0 
specified range: If you do not more companies in a LAN segment, it can dial *** but can not access internal resources. Needs to be routed or set the same network segment
Client Access --- keep up the client computer's IP public IP *** server in a network segment, the client card: 10.0.0.0
company network: 192.168.1.0
*** server: network card, 192.168.1.0 , external network card: 10.0.0.0 
this page to set the dial to use DHCP to assign ip address user *** 